Mobile bills are rising this year by £1.80 to £2.50 a month, with fixed broadband up by £2 to £4, according to figures published by the regulator Ofcom in February. Anyone whose provider failed to set that rise out clearly before signing is entitled to 30 days' warning and a penalty-free exit.
Those amounts are now written into contracts as cash sums. Since 17 January 2025, providers have been barred from linking mid-contract rises to inflation or to any percentage, and must state the figure in pounds and pence at the point of sale.